成為英雄的最大障礙是懷疑自己是否會證明自己是個傻瓜；真正的英雄主義是抵抗這種懷疑，而最深刻的智慧是知道何時應該抵抗，何時應該服從。
沒有道德的效率只是在錯誤方向上的速度。
The goal of education is not to increase the amount of knowledge but to create the possibilities for a child to invent and discover, to create men who are capable of doing new things.